18.05.2021 14:36, Omacht András wrote:
Ok, let's see the following example:
Master:
CREATE SEQUENCE TMP_GEN_2;
commit;
CREATE TABLE TMP_TABLE (
VC VARCHAR(10)
);
commit;
CREATE OR ALTER TRIGGER TMP_TABLE_BIU0 FOR TMP_TABLE
ACTIVE BEFORE INSERT OR UPDATE POSITION 0
as
declare variable dummy integer;
begin
dummy = gen_id(tmp_gen_2, 1);
end
commit;
insert into TMP_TABLE (VC) values ('A');
commit;
-- At this point in master and replica's generator has the same value: 1
update tmp_table set vc = 'B';
commit;
-- At this point master's generator value is 2, but the replica's generator
value is 1.
What you should get is a "Table TMP_TABLE has no unique key" error while
committing the UPDATE statement.
Dmitry
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